Geoege w



(No Model.) 2 Sheets--Sl1eet 1.

G. W. HUNGERFQRD. COFFEE ROASTER, MIXER, AND SGOURER. No. 366,106. Patented July 5, 1887.

a n o o 0 a o 0 o o a o o o a o n o a o N. PETERS, Pholo-mhogn lwr, Washington, p Q

I 2 Sh eets--Sheet 2.

NGEBPORD. MIXER, AND 300 R.

' Patente 1y 5, 1887.

(No Model.)

COFFEE R0 3 *l o 0 L H E Fl miwin v62 I UNITED STATES PATENT OFFICE.

GEORGE \V. HUNGERFORD, OF-NENV YORK, N. Y.

COFFEE ROASTER, M

IXER, AND SCOURER.

SPECIFICATION forming part of Letters Patent No. 366,106, dated July 5. 1887.

Application filed Nor'cmber 18, 1886. Serial No. 219,316. No model.)

To all whom it may concern:

Be it known that I, GEORGE W. HUNGER- FORD, a citizen of the United States, residing at New York, in the county and State of New York, have invented new and useful Improvements in Coffee Roasters, Mixers, and Scourers, of which the following is a specification.

This invention relates to improvements in coffee roasters, mixers, and scourers, as fully set forth in the following specification and claims, and illustrated in the accompanying drawings, in which- Figure l is a side elevation of a roaster, partly in section. Fig. 2 is a front view of a roaster. Fig. 3 is a vertical transverse section of a roaster. Fig. 4 is a side elevation of a roaster, partly in section, so as to expose the interior of the roaster.

Si milar letters indicate corresponding parts.

The letter A indicates the side walls of a furnace made of suitable material-such as firebrick-and preferably having a fire-place, B, grate-bars O, and ash-pit I). Suitable doors, E F, may be provided for the fire-place and ash-pit. In the furnace is suitably mounted a roaster, F, of suitable material-sueh, for example, as sheet'metal. The front end of the roaster is provided with a flange, I, which is held firmly against a rim or ledge, K, on the front wall of the furnace. The flange I and rim or ledge K are of circular form, so as to allow rotation of the roaster. The rear end of the roaster is connected by a feather, H, Fig. 4, to the axle G, so that the roaster is compelled to turn with the axle; but as the roaster expands or contracts,beeause of changes in the temperature, the rear end of the roaster can move longitudinally on the axle G. WVarping or injury of the roaster, because of its expansion or contraction, is thus avoided. The front of the roaster F is connected to the axle G by means of arms J, attached to the roaster and to a collar, L. The collar L can be fixed and adjusted on the axle G by a set-screw, S, passing through the collar and clamping the collar against the axle G. The front portion of the axle G passes through a bearing, 1?, sup ported on the front wall, It, of the furnace by arms or supports Q. The front end of said axle is provided for the attachment of a nut, M, and by screwing said nut M onto the axle G said nut M will be caused to press against the bearing P, and will draw the axle G and roaster F forward and cause the flange I of the roaster to sit against the ledge K. On loosening the nut M the spring N, which is inserted between the collar L and the bearing P, will press the axle G backward through the pressure of said spring upon the collar L. To prevent accidental movement of the nut M, said nut is perforated so as to allow of the insertion of a screw, 0. By having the screw 0 pass through a slot in the axle G, as seen in Fig. 1, the nut M is held against rotation. The rear of the axle G is supported in 'a bearing, V, attached by arms U to the rear wall, T, of the furnace. Said axle G can be rotated from. the shaft Y by means of a bevel-gear, X W. The shaft Y rests in suitable bearings, b, and said shaft is provided with a driving-pulley, Z, and a loose pulley, a, so that said shaft can be made to rotate or to remain at rest, as desired. The rotation of the shaftYrotates the axle G and the roaster F.

To the inner wall of the roaster F are at tached wings or lifters 0. These wings orlifters are formed of suitable 1naterial-snch as cast or malleable metal-and said wings are fixed diagonally in said roaster, as shown. The wings c are attached with one edge to the wall of the roaster, and to the inner edges of the wings a are attached the wings or lifters d. The win gs cl are also placed diagonally, as seen, and the positions of the Wings 0 and d are such that the wings a and d face in opposite directions. These wings revolve with the roaster F, and said Wings 0 d secure athorough agitation of the material in the roaster, so that every portion of such material is equally wel roasted.

' The material to be roasted can befed into the roaster through a hopper, e. The hopper 6 can be closed by a cover, f, swinging on a suitable hinge or pivot, g. Arrope or chain, h, passing over a pulley, t, and, provided with a weight, k, facilitates the raising of the cover f.

The material in the roaster can be withdrawn therefrom through a door, j. The door j is held closed bylatches or tongues m, engaging suitable lugs, s, on the Wall of the furnace. The latches m swing on pivots r on the doorj. To the tongues m are attached suitable arms, 01, pivoted or jointed to a handle or arm, 0. By pulling on the handle the tongues m are caused to swing on the pivots 0 out of engagement with the lugs s, and the door j is raised or moved to an open position, as indicated in dotted lines in Fig. 4. A hook,p, on the handle '0 can be made to hold the door j open by causing said hook p to engage asuitfor one end of the roaster F. Said end of the roaster F can thus be left open, thereby cheapening the construction of the roaster, and when the roaster F is taken out of the furnace said open end gives ready access to the interior of the roaster for cleaning and repairing.

The gases in the hopper 6 can pass off through The gases generated in the cylinder or roaster F can pass into the hopper e, and tlEfence through the flue u, and thus be carried 0 The spring N, as is seen, tends to press the roaster away from the seat or ledge K, and thus prevents the roaster from working or pressing too strongly against the seat K.

Wear, noise, and excessive friction of the roaster while moving in or over the seat K are thus prevented.

To prevent turning of the collar L on the shaftG, saidcollar L may be secured on the shaft by a feather-key.

By having the wings c d facing in opposite directionsone set of said wings in the operation of the roaster will cause the coffee or material in the roaster to travel toward the front of the roaster, while the other set will cause the coffee or material to travel toward the rear of the roaster. The material in the roaster is thus thoroughly mixed and also scoured as well as roasted. It is also to be noticed that by not having the wings extend continuously or with unbroken surfaces through the interior of the roaster the material in the roaster will be rapidly shifted from one surface onto a different surface, whereby a different portionof the material is presented to the hot metal of the roaster. The material in the roaster is thus not apt to spot or burn. The receptacle F can also be used without heat for the purpose of mixing and scouring coffee as the action of the wings on the coffee effects a mixing and scouring. As with arrangement of wings 0 d, the coffee cannot lodge for any length of timein anypart of the roaster, the coffee will not be burned, and will be thoroughly scoured and mixed, and danger of breaking the coffee becauseof suchlodging is avoided. By opening the door j the coffee vwill be rapidly fed out of or discharged from the receptacle F by operating said receptacle in the proper direction. As the fastenings s for the door j are at one side, no coffee is apt 7 to lodge in said fastenings, said fastenings not being in the way of coffee or material being discharged. The automatic operation of the latches or tongues m enable the door j to be rapidly opened and closed, as a pull on the handle 0 opens the door, and by letting the door j descend by its weight the latches at will automatically catch into the fastenings 3.

By having the bearings P Vfor the shaft G outside of the walls of the" furnace, and by having an air-space between saidbearings and the furnace-wall, said hearings will not become excessively heated. I

WVhen desired, steam, water, or other'sub stances may be introduced into the receptacle through a suitable opening in the hopper e, which opening is shown in the drawings as being closed by a cover, 1;, suitably pivoted or attached to the hopper. This opening can be uncoveredand substances passed through said opening without stopping the operation of the device.

What I claim as'new, and desire toseeure by Letters Patent, is-

1. The combination, ,with a furnace, a rotat- "ing shaft, G, and a ledge, K, of a rotating ledge'K, of-a shaft, G, extendingthrough said bearing, a roaster, F, provided at its forward end with a flange, I, engagingthe ledge and held against endwise movement, and having its other end'feat-hered on the rear'end of the shaft, and a nut on the forward end of the shaft to tighten the cylinder on the ledge, substantially as described.

3. The combination, with a furnace having its front wall provided with an external bearing, 1?, and an internal ledge, K, of a shaft, G, extending through said bearing and screw threaded and slotted at .its forward end, a roaster, F, provided'with-a flange,'I, atits forward. end engaging theledge and held against endwise movement, and having its other end feathered on the rearend of the shaft, a nut, M, on the forwardend of the shaft, and a transverse screw, 0, passing through the nut into the slotted end of the shaft, substantially as described.

4. The combination, with a furnace having its front wall provided with an external bear- ICO IIO

IIS

In testimony whereof I have hereunto set :0 my hand and seal in the presence of two subscribing witnesses.

GEORGE W. HUNGERFORD. [LS1] Witnesses:

W. HAUFF, WILLIAM MILLER. 

